Get Virtual Server from Pool (using iControlRest)

I have an automated process that cleans up unused pools. But it fails when the pool is attached to an existing Virtual Server.

I see that I can get the pool from a Virtual Server (via the "pool" property), but I don't see a way to get the Virtual Server name from the Pool.

If there is no way to do this, I can just try to delete it, and then parse the name of the Virtual Server out of the error message. But it would be much nicer to not have to fail as part of normal operations.

Is there a way to get the Virtual Server that is using a pool with only the pool's information? (Using iControlRest)